NCERT Solutions for Class 10 विज्ञान Chapter 8 How Do Organisms Reproduce?

Name the method by which spirogyra reproduces under favourable conditions. Is this method sexual or asexual?

What happens when :
Accidently, Planaria gets cut into many pieces?

What happens when :
Bryophyllum leaf falls on the wet soil?

What happens when :
On maturation sporangia of Rhizopus bursts?

State the changes that take place in the uterus when :
Implantation of the embryo has occurred.

State the changes that take place in the uterus when :
Female gamete/egg is not fertilised

Name the organ that produces sperms as well as secretes a hormone in human males. Name the hormone it secretes and writes its functions.

Name the parts of the human female reproductive system where fertilisation occurs.

Explain how the developing embryo gets nourishment inside the mother's body.

A student while observing an embryo of a gram seed listed various parts of the embryo as listed below :

Testa, Micropyle, Cotyledon, Tegmen, Plumule, Radicle. On examining the list the teacher commented that only three parts are correct. Select these three correct parts :

• Cotyledon, Testa, Plumule

• Cotyledon, Plumule, Radicle

• Cotyledon, Tegmen, Radicle

• Cotyledon, Micropyle, Plumule